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How To Change The CPU governor

Performance tunning is one of the most exciting and complicated subject at the same time, it’s complicated because if you change one setting it might affect the others so you must have a deep understanding of the what, how, why and the why not of other aspect of the operating system that you would like to change.
So here, I’ll demonstrate how to change the cpu governor of a Red Hat 6.6 which come with the governor userspace enabled by default to use the performance governor .

Here is some notes from the Red Hat documentation to have some refreshed information:

The governor defines the power characteristics of the system CPU, which in turn affects CPU performance. Each governor has its own unique behavior, purpose, and suitability in terms of workload.